Heat and cold retaining glasses, mugs, bowls and the like



J. M. MARTIN July 21, 1959 2,895,636 HEAT AND com RETAINING GLASSES, 'MUGS, BOWLS AND THE LIKE Filed July 24, 1957 4 Sheets Sheet 1 July 21, 1959 J. M. MARTIN HEAT AND COLD RETAINING GLASSES, MUGS, BOWLS AND THE LIKE Filed July 24, 1957 4 Sheets-Sheet 2 INVENTOR. JAMES M. MARTIN By 8% ATTOEAZT v July 21, 1959 r J. M. MARTIN 2,895,636 HEAT ND cow RETAINING GLASSES, MUGS, BOWLS AND THE LIKE Filed July 24,195? I 4 Sheets-Sheet 3 livmvrom g 1 m' JAMES M. MARTIN J y 1959 J. M. MARTIN 2,895,636

HEAT AND COLD RETAINING GLASSES, MUG-S, BOWLS AND THE LIKE Filed July 2 1', 1957 4 Sheets-Sheet 4- 7 as I36 I E I g I :24 I38 E j JFIMES M. MFIRTIN HT'I'URNE Y United States HEAT AND COLD RETAINING GLASSES, MUGS, BOWLS AND THE LIKE James M. Martin, Greenwich, Conn. Application July 24, 1957, Serial No. 673,967 3 Claims. (Cl. 220- 15) This invention relates to new and useful improvements in heat and cold retaining vessels such as insulated drinking glasses, cups, mugs, bowls and the like.

More particularly, the present invention proposes the construction of an improved heat and cold temperature retaining vessel which can be molded easily and inexpensively of plastic material with two shells adapted to snap together at the top to form a smooth integral lip and with spaced side and bottoms walls for insulation of liquids or other material held in the inner shell.

Still further, the present invention proposes forming the vessel with an inner shell having a bottom wall and dependent outer shell engaging member frictionally to seat in the bottom wall of the outer shell to hold the bottom walls of the two shells in spaced relation and secure the inner shell to the outer one.

Another object of the invention proposes forming the inner shell with a snap ring retainer and providing a lid or cover for the vessel with a dependent flange frictionally to seat against the snap ring retainer and removably to hold the lid or cover over the vessel.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a perspective view of a cup constructed and arranged in accordance with the present invention.

Fig. 2 is a vertical central sectional view of the cup shown in Fig. 1.

Fig. 3 is a fragmentary enlarged detail view of a part of the structure shown in Figs. 1 and 2.

Fig. 4 is a view similar to Fig. 1 but showing a modification of the invention.

Fig. 5 is a vertical central sectional view of the mug structure shown in Fig. 4.

Fig. 6 is an enlarged detail sectional view of a part of the structure as shown in Fig. 5, in disassembled relation.

Fig. 7 is a view similar to Figs. 1 and 4 but illustrating another modification.

Fig. 8 is a vertical central sectional view of the structure shown in Fig. 7.

Fig. 9 is a view similar to Fig. 8 but illustrating another modification.

Fig. 10 is a view similar to Fig. 9 but illustrating still another modification of the invention.

Fig. 11 is a diagrammatic top plan view of the cup shown in Fig. 10 with the cap or lid removed.

Fig. 12 is a view similar to Fig. 3 but illustrating another modification.

Figs. 13, 14 and 15 are fragmentary views similar to Fig. 3 showing further modifications of the invention.

Fig. 16 is a view similar to Fig. 2 but showing still another modification of the invention.

Fig. 20 is a fragmentary view similar to Fig. 19 but showing a still further modification of the invention.

Referring more particularly to the drawings, the vessel in accordance with the first form of the invention shown in Figs. 1, 2 and 3, is a cup designated generally by the reference numeral 15 and molded of plastic material such as high impact polystyrene in a split mold.

Cup 15 has an outer shell 16 and an inner shell 17. The outer shell 16 has a bowed side wall 19 having a handle 20 at one side. An inwardly disposed upper lip or edge 21 constitutes the open upper end of the outer shell side wall 19. Bottom wall 18 of the outer shell has an inner shell retaining portion 22 preferably in the form of spaced arcuate grooves but which may be a single annular groove.

Inner shell 17 has a bottom wall 23 and a side wall 24 preferably straight and divergent upwardly from the bottom wall. Dependent from the bottom wall 23 is an outer shell engaging portion 25 to seat in the grooves or groove 22 in the outer shell bottom wall 18 to hold the bottom wall 23 of the inner shell spaced from the bottom wall 18 of the outer shell. Preferably the outer shell engaging portion 25 is in the form of spaced arcuate lugs or flanges to prevent movement of the shellsrelative to one another.

The two side walls 19 and 24 of the outer and inner shells are spaced apart just as are the bottom walls 18 and 23 of the shells to provide insulating air spaces between the shells which may be evacuated if desired.

Side wall 24 of the inner shell has an outwardly disposed locking flange upper edge 26 frictionally to fit in the outer shell and snap over the lip 21 at the top of the outer shell side wall 19 to connect the two shells and form a smooth lip for the cup. The outwardly disposed locking flange upper edge 26 of the inner shell side wall 24 has an annular shelf 27 which underlies the bottom edge of the inwardly disposed upper lip 21 of the outer shell side wall 19. The shells are cemented together after the inner shell upper edge 26 is snapped into place in the outer shell. A squeeze-on plastic cap or lid 28 is also provided for the cup to cover the upper edges of the two shells and frictionally fit on the outer shell. Cap or lid 28 may also be used as a saucer, coaster, or ash tray.

The modification of the invention shown in Figs. 4, 5 and 6 is characterized by the provision of a mug 30 constructed similarly to cup 15 but having outer and inner plastic shells 31 and 32 with substantially parallel spaced bottom and side walls 33 and 34 and 35 and 36, respectively. Bottom wall 33 of the outer shell has spaced arcuate grooves 37 frictionally to receive dependent lugs or flanges 38 on the bottom wall 34 of the inner shell. Outer shell side wall 35 has an inwardly disposed upper lip 39 and inner shell side wall 36 has an outwardly disposed locking flange upper edge 40 with a shelf 41 and the lip 39 and edge 40 snap together. The squeeze-on cap or lid 42 which fits over the top of the mug may also be used as an ash tray. A handle 43 is formed on the outer shell 31.

The modification of the invention illustrated in Figs. 7 and 8 is characterized by the provision of a cocktail glass 50 having outer and inner shells 51 and 52, respectively, with spaced bottom and side walls 53 and 54 and 55 and 56, the outer shell side wall 55 being bowed outwardly. Bottom wall 53 of the outer shell has spaced arcuate grooves 57 for dependent spaced bottom wall 18 and an outwardly flanges or lugs 57' on the inner shell to fit and to hold the bottom walls of the two shells spaced apart with an air spacebetweenr An outwardly disposed locking flange upper edge 58 with a shelf 59 is providedon the inner shell side wall 56 and an inwardly disposed. locking flange upper edge 60 is provided on the. outer shell side wall 55 The squeeze-on top or cap 61 which covers the top of the glass may also be used as a coaster.

The modification of the invention illustrated in Fig. 9 is characterized by the provision of a bowl 65 having an outer shell 66 and an inner shell 67, the outershell having a bottom wall 68 with spaced grooves 69 and a bowed, side wall 70 with a handle 71 and an inwardly disposed; locking flange upper edge 72. The inner shell 67' has a bottom wall 73 with depending lugs or flanges 74, and a straight upwardly divergent side Wall 75 with an outwardly disposed locking flange upper edge 77 with ashelf portion 73. and squeezes on the top of the bowl.

The modification of the invention shown in Figs. 10 and 11 is characterized by the provision of a cup 85 having outer and inner shells 86 and 87. The outer shell has a bottom wall 88 with spaced grooves 89 and a straight upwardly divergent side wall 90 with an inwardly disposed locking flange upper edge 91. The inner shell 87 has a bottom wall 92 with depending lugs or flanges 93 to seat. in grooves 89 and a straight upwardly divergent side wall 94 with outwardly disposed locking flange upper edge 95 having a lower shelf 96. The outer shell side wall and inner shell side wall converge at their'upper edges. Inner shell side wall 94 has a beaded portion or snap ring projection 97 so that a cap or lid 9 8 having a dependent annular beaded flange 99 may snap on the top of the cup. The cap or lid 98 may beused as a saucer and the cup preferably is formed in a split mold and molded as indicated in Fig. 11. The outer shell is provided with a handle 99'.

The modification of the invention illustrated in Fig. 12 is characterized by the provision of outer and inner shell side walls 100 and 101, respectively. The outer shell side wall 160 has an inwardly disposed locking flange upper edge 102 and the inner shell side Wall 101 has an outwardly disposed locking flange upper edge 103. Edge 102 of'the outer shell has an annular beaded projection or spaced beaded projections 104 and inner shell edge 103 has a complementary beaded shaped groove ori'spaced complementary grooves 105 to receive the projections, and in addition has a lower shelf 106.

In'the modification of Fig. 13, the inner shell 110 is formed at its top end with an inner thickened portion 111 and an outer thickened portion 113 immediately thereabove forming a squared off annular shoulder 113 facing downwardly between said thickened portions. The inner thickened portion 111 is formed with an annular beaded ring or flange 114 on its outer surface midway its top and bottom. The outershell 115 is formed with'a square top end edge 116 and with an annular beaded ring or flange 117 on its inner surface adjacent its top end edge. In assembling the shells, the inner shell 110 is inserted into the outer shell so that its annular head or flange 114 snaps over the beaded ring or flange 117 of the outer shell and interlocks therewith This interlock together with the biting action of the flanges on the surfaces of the shells holds the shells, together. The dimensions of the parts are such that the squared off shoulder 113 of the inner shell seats on the squared top end edge 116 of the outer shell, with the outerthickened portion 1120f the inner shell extending.

above the outer shell and for the cup.

providing a smooth lip portion The modified form of Fig. 14 is the same as the form A lid or cap 79 has a handle 80 with the beaded ring or flanges 114' on the inner shell being positioned above the beaded ring or flange 117' on the outer shell instead of vice versa as in Fig. 13.

The modification of the invention shown in Fig. 15 differs from the forms of Figs. 13 and 14 in that the inner shell 110" has an annular groove 120 formed in the outer surface of its inner thickened portion 111" and the outer shell 115" has an annular beaded ring or flange 121 on its inner surface adapted to snap into said groove to hold the shells frictionally together.

The modification of the invention shown in Figs. l6, 17, 18 and 19 is characterized by the provision of a mug 122 having outer and inner shells 123 and 124, respectively. The outer shell has a bottom wall 125 and a straight upwardly divergent side wall 126. Bottom wall 125 is formed with an upstanding pointed lug 127 at its center. Side wall 126 terminates at its upper end edge in an annular convex-concave beaded portion or snap ring 128 forming an extension of the side wall and providing an annular groove 129 therein. The inner shell 124 has a bottom wall 130 with a depending discshaped button 131 at its center with a central recess 132 therein adapted to seat on the pointed lug 127 on the bottom wall of the outer shell for centering the inner shell in the outer shell and for maintaining the shells in spaced apart relation. The inner shell 124 extends above the outer shell and its formed with an enlarged upper end portion 133 providing a downwardly facing shoulder134 which is formed with a groove 135 opening downwardly. A protruding annular curved beaded portion 136 is formed on the outer surface of the enlarged portion- 133 adjacent the shoulder 134 which is to be forced over the straight edge face 137 of the beaded portion 128 on the outer shell 123 and to snap into the annular groove 129 therein for interlocking the outer and inner shells. The outer shell 123 is formed with a handle 138 having opposed grooves 139.

The modification illustrated in Fig. 20 differs from the form of invention shown in Figs. 16-19 in that the enlarged portion 133 of the inner shell 124 is formed with an annular groove 140 just above the beaded portion 136 on said enlarged portion. The beaded portion 123 on the outer shell 123 is formed with an annular beaded portion 141 on its edge face 137 so that in assembling the shells, the beaded portion 136' on the inner shell 124' slips over the beaded portion 141 on the edge face 137 of the beaded portion 128' on the outer shell and snaps into the groove 129 in said beaded portion 128.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent 1s:

1. A heat and cold retaining vessel construction for glasses, mugs, bowls and the like comprising a closed b'ottom outer shell, a closed bottom inner shell that is dimensioned so the closed end thereof can telescope within the closed bottom of said outer shell, said shells serving as a double-wall vacuum and coverable type, of vessel, the upper end of said inner shell extending above the outer shell and being enlarged, the outer surface of the enlarged portion being flush with the outer surface of the outer shell, said enlarged portion being formed with a central groove opening downwardly, the outer wall of said groove seating on the top edge of the outer shell, an annular bead on the free end of the outer wall of said groove, and an annular bead on the outer surface of the top end of said outer shell, said latter bead extending above the top end edge of the outer shell and being snapped over the annular bead on said enlarged adapted portion of the inner shell in interlocking relation therewith.

2. A heat and cold retaining vessel construction as defined in claim 1, wherein the outer shell is formed with an upstanding lug at the center of the inner surface of its closed bottom end and said inner shell is formed with an enlarged button formation centrally of its closed bottom end, said button formation having a recess seating on the lug of the outer shell.

3. A heat and cold retaining vessel construction as defined in claim 2, wherein the outer shell has an outstanding handle extending from the top of the outer shell to a point closely adjacent the bottom thereof.

References Cited in the file of this patent UNITED STATES PATENTS Conner Apr. 13, Conner Apr. 13, Morton Aug. 15, Hlavaty Nov. 10, Arnberg Sept. 27, Kircher Oct. 5, Gits Aug. 16, Tupper Jan. 8, Emmert et al Sept. 10, 

